Solids?

My baby is only 3 months old, so we will not be starting solids for a few months yet (not starting until 6 months). I do plan to make her baby food and purees, but I would also like to nurse her until she is 2. However, I'm a first time mom and have NO IDEA how starting solids works. Can anyone offer any advice?

Also, I would love to get a head start on making/freezing baby food, so if you have any advice or recipes to share on that front PLEASE feel free.